When concerned about crime statistics it is best for you to do your own research. Here is a link that cna help you. http://www.neighborhoodscout.com/results.jsf
To see what homes are selling for in the area or neighborhood you are interested go to http://www.homeinsight.com/Widget/default.asp?F2FJTNQ7CGJJ
I see you are interested in safety and values. If by Safety you mean crime statistics, then call 311. They will refer you to the local precinct, which can supply you with all the information that you may need.
And Value is not the same as Price.
Contact a Staten Island Realtor, we will be happy to help you.